2314 2005-09-28 13:47:14 +0000 R-200: Problem with erratum E1-18 (datatypes) 2006-09-20 18:10:49 +0000 1 1 1 Unclassified XML Schema Datatypes: XSD Part 2 unspecified PC Linux RESOLVED WONTFIX important, hard, declared names cluster needsDrafting P2 normal --- 1 cmsmcq cmsmcq www-xml-schema-comments oldest_to_newest 6527 0 cmsmcq 2005-09-28 13:47:14 +0000 The discussion of value space and lexical space in XML Schema Datatypes 1.0 has some problems. Although elsewhere the spec suggests that every value in a value space has a lexical representation, and that every literal in a lexical space maps to a value, the discussion of ENTITY in 1.0 suggests that some literals in the lexical space don't map to values. Describing the value space as restricted to names of declared entities also suggests to some readers that entity declarations are part of datatype validity; some members (at least) of the WG believe that this is not so and ought not to be implied by the spec. So: the description of value space and lexical space should be revised, and notes should be added (analogous to those added to Datatypes 1.1 for ID, IDREF, and IDREFS) saying the relevant constraint is to be enforced at a different level, not as part of datatype validity. Cf. Bug 2193. 7216 1 sandygao 2005-11-18 03:43:26 +0000 The "so:..." part in comment #0 can be deemed as a phase-1 proposal (which I'm in favor of). If it's adopted, the following are suggested phase-2 changes. Change section 3.4.11 (not including subsections) to "3.4.11 ENTITY [Definition:] ENTITY represents the ENTITY attribute type from [XML]. The ·value space· of ENTITY is the set of all strings that ·match· the NCName production in [Namespaces in XML]. The ·lexical space· of ENTITY is the set of all strings that ·match· the NCName production in [Namespaces in XML]. The ·base type· of ENTITY is NCName. For compatibility (see Terminology (§1.5)) ENTITY should be used only on attributes." And change section 3.4.12 (not including subsections) to 3.4.12 ENTITIES [Definition:] ENTITIES represents the ENTITIES attribute type from [XML]. The ·value space· of ENTITIES is the set of finite, non-zero-length sequences of ·ENTITY·s. The ·lexical space· of ENTITIES is the set of space-separated lists of tokens, of which each token is in the ·lexical space· of ENTITY. The ·item type· of ENTITIES is ENTITY. For compatibility (see Terminology (§1.5)) ENTITIES should be used only on attributes." 7218 2 sandygao 2005-11-18 17:41:46 +0000 Discussed at 2005-11-18 telecon. It was determined that we also need notes parallel to those for IDREF and IDREFS to indicate that ENTITY related rules are enforced in structures. RESOLUTION: Accept SG's text plus HT's suggestion as detailed Phase 1 agreement, change to needsDrafting, assigned to HT 11890 3 David_E3 2006-09-20 18:10:49 +0000 Marked as RESOLVED/WONTFIX per the minutes http://www.w3.org/XML/Group/2006/01/xml-schema-ftf-minutes.html#Review_of_open_issues